A sulfonamide compound that prevents melanopsin/Opn4 photoactivation in a reversible and cis-Retinal-competitive manner (Kb = 6 and 0.16 µM in competitive binding studies using Opn4 pre-bound with cis-Retinal or not) without apparent affinity toward bovine retina rhodopsin or a panel of 74 other receptors, ion channels, and enzymes. Effectively inhibits cellular phototransduction mediated by human Opn4 in CHO transfectants (IC50 = 665 nM; drug added 30 min before 10 µM 9-cis-Retinal & photoactivation), by murine Opn4 in transfected Xenopus oocytes (IC50 = 190 nM; drug added 3 min before 50 µM 11-cis-Retinal and photoactivation), as well as by endogenous Opn4 in primary rat ipRGCs (intrinsically photosensitive retinal ganglion cells; 10 µM). Shown to be bioavailable in mice via i.p. injection (retina [AA92593] ~7.5 µM 30 min post 30 mg/kg i.p. dosing; >95% clearance within 2 h) and effectively suppress PLR (pupillary light reflex; pupil constriction) in a time- and Opn4-dependent manner in mice in vivo. Likewise, blue light insensitivity is observed in Opn4-/- and AA92593-treated wild-type, but not vehicle-treated wild-type, P14 neonatal mice.
A sulfonamide compound that prevents melanopsin/Opn4 photoactivation in a reversible and cis-Retinal-competitive manner without apparent affinity toward bovine retina rhodopsin or a panel of 74 other receptors, ion channels, and enzymes. Effectively inhibits cellular phototransduction mediated by human Opn4 (IC50 = 665 nM; using CHO transfectants), murine Opn4 (IC50 = 190 nM; using transfected Xenopus oocytes), and rat Opn4 (10 µM; using primary rat ipRGCs). Shown to effectively suppress PLR (pupillary light reflex; pupil constriction) in a time- and Opn4-dependent manner in mice (30 mg/kg i.p.) in vivo. Likewise, blue light insensitivity is observed in Opn4-/- and AA92593-treated wild-type, but not vehicle-treated wild-type, P14 neonatal mice.
Biochem/physiol Actions
Cell permeable: yes
Primary Target melanopsin (Opn4)
Reversible: yes
Target Ki: 110 and 160 nM for human and mouse melanopsin, respectively)
Packaging
Packaged under inert gas
Warning
Toxicity: Regulatory Review (Z)
Reconstitution
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 monthst at -20°C.
Other Notes
Jones, K.A., et al. 2013. Nat. Chem. Biol.9, 630.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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